Abstract
The Status register is unlike the various ‘other’ registers of the 6502. When using it we are not really concerned with the actual hex value it contains, but more with the condition or state of the individual bits. These individual bits are used to denote, or flag, certain conditions as and when they occur during the course of a program. Of the register’s eight bits, only seven are used — the remaining bit (bit 5) is permanently set. (In other words it always contains a 1).
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Rights and permissions
Copyright information
© 1986 Chapman and Hall
About this chapter
Cite this chapter
Gilder, J.H. (1986). Status Symbols. In: Apple IIc and IIe Assembly Language. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-6424-5_7
Download citation
DOI: https://doi.org/10.1007/978-1-4684-6424-5_7
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-412-01121-4
Online ISBN: 978-1-4684-6424-5
eBook Packages: Springer Book Archive